Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 228
Message text: Source value missing for (CoCd &1, new SecAcct &2)
Source value missing for (company code &V1&, new securities account &V2&
).
Error
Provide a suitable mapping for securities accounts.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20200_CHECK228 indicates that there is a missing source value for a specific company code (CoCd) and a new secondary account (SecAcct) during a data migration or conversion process. This error typically arises in the context of the SAP S/4HANA migration or during the use of the SAP Conversion Tools.
Cause: Missing Data: The primary cause of this error is that the system is unable to find the required source value for the specified company code and secondary account. This could be due to: Incomplete or incorrect data in the source system. Missing entries in the mapping tables that link old account numbers to new account numbers. Data not being properly extracted or transformed during the migration process.
Configuration Issues: There may be configuration issues in the system that prevent the proper mapping of accounts.
Solution: Check Source Data: Verify that the source data for the specified company code and secondary account exists and is
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